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Carb Screws... gah! (Read 15 times)

vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #30 - 09/27/06 at 17:40:15 Well, Good work! Question... did you starrt w/ the smallest drill bit? Best, V
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Veritas Ex Member	Re: Carb Screws... gah! Reply #31 - 09/27/06 at 17:48:52 Yeah, I started with the smallest bit and worked my way up. It just would not bite. It just kept grinding down the screw head more and more. I wish I had a digital cam so I could show you the screws. Using nylon washers is ok, right? It's not gonna melt, are they?
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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #32 - 09/27/06 at 17:56:51 No, the carb is far enough away from the engine that hey should be fine...
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Veritas Ex Member	Re: Carb Screws... gah! Reply #33 - 09/27/06 at 18:07:04 Good, I tried metal ones, but they were too big and didnt fit the hole it should have so I found these black nylon ones at home depot. So from here I should probably adjust the mixture screw, AND the idle speed?
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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #34 - 09/27/06 at 18:54:37 Typically one sets the idle to about 1200 rpm, then tunes the pilot. did you read Lancer's jet tuning in the tech sect? Very good for pilot tuning... If you aint got a tach, and I don't either... turn in the idel screw until it "sounds like 1200 rpm." Normal idle is 1000 rpm, or about 7 putts from the muff/sec. V
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Veritas Ex Member	Re: Carb Screws... gah! Reply #35 - 09/27/06 at 19:05:48 so i HAVE to rejet in order to gain an advantage from the white spacer mod?
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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #36 - 09/27/06 at 19:10:51 V, Remind me what muffler and air intake you are running... If stock, just gettingt he PMS screw set right should do it. Upping the main 1/2 size prolly won't hurt either, esp as you are at sea level. V
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Dynobob

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2003 LS650 (with
Supertrapp)

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Northern Virginia
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Re: Carb Screws... gah!
Reply #37 - 09/27/06 at 21:42:18

Veritas wrote on 12/31/69 at 16:00:09:

so i HAVE to rejet in order to gain an advantage from the white spacer mod?

The white spacer mod is part of a rejet.

0 - 1/8 throttle -> slow mixture screw and slow jet

1/8 - 3/4 throttle -> needle and white spacer

3/4 - WOT -> main jet

You'll choose your main jet size based on what exhaust (and intake) you're running.

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Veritas Ex Member	Re: Carb Screws... gah! Reply #38 - 09/28/06 at 01:10:02 I'm running otherwise stock. Is it going to hurt anything to do just the white spacer for now?
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vroom1776

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Re: Carb Screws... gah!
Reply #39 - 09/28/06 at 07:25:24

nope! Mine ran great stock... at 4000 ft. you won't hiurt it, but you are likely running a little lean on the main jet. If you are particularly concerned, check the plug...

Oh, and after adjusting the pms screw, reset the idle to 1000 rpm. And, pretty much anytime you go into the carb and change something, you might as well considder that "rejetting."

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Dynobob Serious Thumper Offline 2003 LS650 (with Supertrapp) Posts: 634 Northern Virginia Gender:	Re: Carb Screws... gah! Reply #40 - 09/28/06 at 12:45:58 Veritas wrote on 12/31/69 at 16:00:09: I'm running otherwise stock. Is it going to hurt anything to do just the white spacer for now? No. It will make your bike run much better. I'd go to 2/3s spacer and 147.5 main jet (up one size) on a stock bike. Replacing the main jet is easy.
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Veritas Ex Member	Re: Carb Screws... gah! Reply #41 - 09/28/06 at 12:47:41 Ok, rode it around a bit today. Still getting mild backfire on downshifting and a medium pop on shut down. Is that the mixture screw?
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horseshoe_george YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 32 Otisfield, ME Gender:	Re: Carb Screws... gah! Reply #42 - 10/01/06 at 15:17:54 Guido wrote on 12/31/69 at 16:00:09: When you get them all out, throw those screws away and go to ACE Hardware and buy some of those stainless steel allens!! I'd doing the carb work next weekend. Does anyone know what size SS allens I need to get at the hardware store? George
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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #43 - 10/02/06 at 07:26:32 M6 or M4
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vroom1776 Serious Thumper Offline Posts: 2110 Gender:	Re: Carb Screws... gah! Reply #44 - 10/02/06 at 07:27:56 Veritas wrote on 12/31/69 at 16:00:09: Ok, rode it around a bit today. Still getting mild backfire on downshifting and a medium pop on shut down. Is that the mixture screw? How long did you ride it for? Did it fully warm up? How many turns out is the PMS screw?
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